Platinum

Autolite® Platinum Spark Plugs

Step up to platinum. A center wire platinum firing tip provides improved performance and durability*. They fire quicker and cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy versus standard plugs. Guaranteed for 4 years.**

*Compared to standard copper plugs

**See warranty details

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FEATURES & BENEFITS

Platinum center wire firing tip for improved performance.
Super conductive Yttrium enhanced ground electrode provides superior heat transfer
Full platinum tip assures virtually no gap erosion for longer plug life
Leak proof, heat fused resistor for durability
4-year limited warranty

Click on the link below to check out our Spark Plug Metallurgy Comparison Chart.

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INSTRUCTIONS

Autolite highly recommends that you consult with your vehicle’s owner’s manual for any specific instructions for changing the spark plugs. Engines can vary widely by make and model. These instructions should be considered for general guidance only.
Replacing spark plugs can be a simple job, if you take things one step at a time. Given a basic understanding of mechanical matters, here's a guide to the proper procedures in changing spark plugs.

Coil-on Plug

Unplug and remove ignition coils. Inspect coil boots for cracking or oil staining. If you have oil in the spark plug wells or on the boots, the valve cover gasket is leaking and must be replaced.
Loosen each spark plug so it can be removed. Clean the seat area with a blast of compressed air or with a shop vac, use proper PPE. This prevents dirt from falling into the combustion chamber when the old plugs are removed.
Remove the plugs and line them up in cylinder order. Inspection of the firing ends of the plugs can identify a number of engine problems that may need correction. (illus. 3)
Check and set the gap on new plugs as recommended in your owner's manual or a Spark Plug Catalog. Use a round feeler gauge to measure the gap between the center and ground electrode. The gauge should pass through snugly but easily. If it's too loose or too tight, reset the gap.
Screw new plugs in by hand until tight. Use a torque wrench to tighten the spark plugs following the manufacturer's recommendations, or refer to a torque chart in the Spark Plug Catalog. If you don't have a torque wrench, see the bottom of the torque chart for hand tightening recommendations.
Replace the coils Before installing the coils, put a small amount of dielectric grease inside the spark plug boot. Check to see if the boots are brittle or cracked, and if there is corrosion on the connector inside the boot. If any of these conditions are present, the spark plug boots should be replaced.
Start the engine. If it misfires or idles roughly, the wires are crossed or not connected to the plugs correctly. Check the firing order and connections closely.

If you have any questions regarding your Autolite spark plugs, call Autolite Answers(SM) to consult with one of our technicians. Autolite Answers 855-200-5200

Distributorless Ignition System (DIS)

Carefully remove the spark plug wires. Grasp the plug wire boot, twist about one-quarter turn to break the seal, then lift straight off. Use plug boot pullers if the boot doesn't break free easily. Number plug wires with tape as you remove them to avoid crossing them. (illus. 1)
Loosen each spark plug so it can be removed. Clean the seat area with a blast of compressed air or with a shop vac, use proper PPE. This prevents dirt from falling into the combustion chamber when the old plugs are removed. (illus. 2)
Remove the plugs and line them up in cylinder order. Inspection of the firing ends of the plugs can identify a number of engine problems that may need correction. (illus. 3)
Check and set the gap on new plugs as recommended in your owner's manual or a Spark Plug Catalog. Use a round feeler gauge to measure the gap between the center and ground electrode. The gauge should pass through snugly but easily. If it's too loose or too tight, reset the gap.
Screw new plugs in by hand until tight. . Use a torque wrench to tighten the spark plugs following the manufacturer's recommendations, or refer to a torque chart in the Spark Plug Catalog. If you don't have a torque wrench, see the bottom of the torque chart for hand tightening recommendations.
Replace spark plug wires in the correct order. Before installing the wires put a small amount of dielectric grease inside the spark plug boot. Check to see if the boots are brittle or cracked, and if there is corrosion on the connector inside the boot. If any of these conditions are present, the spark plug wire should be replaced.
Start the engine. If it misfires or idles roughly, the wires are crossed or not connected to the plugs correctly. Check the firing order and connections closely.

If you have any questions regarding your Autolite spark plugs, call Autolite Answers(SM) to consult with one of our technicians. Autolite Answers 855-200-5200

TECHNOLOGY

High nickel alloy side electrode maintains precise gap
Full platinum tip assures virtually no gap erosion
Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel efficiency*

*As compared to standard plugs

PARTS

A quick reference to Platinum's part numbers are listed below. Autolite provides OE-equivalent quality and performance to over 95% vehicle applications. If you don't see the part number for your vehicle, don't fret! Our Parts Finder allows quick access to the right part for your engine.

AP5325
AP5224
AP3923
AP5263
AP3924

AP104
AP5245
AP606
AP103
AP605

AP25
AP5364
AP5243
AP5426
AP985